Much like other leaders, a shepherd will protect their flock and are constantly aware of the desired destination of their sheep. They work diligently to make sure that those they lead are provided for (being fed) and that no outside dangers cause them harm. There is a constant effort to keep the flock together as an isolated sheep is vulnerable to attack and most certainly won't reach the desired end. We forget however that a good shepherd also knows when it is time for the flock to rest. He (or she) understands the need to regulate pace and find time for recuperation. It may seem counterintuitive to stop when the demands of the journey are so great, but down time will rejuvenate & refocus everyone.
A good leader is able to maintain speed when necessary, but also sees the value in pulling to the side of the road to catch your breath. It's a wise balance of rest & perseverance that leads to fulfilled objectives and healthier people.